Medicine detail

Diphenhydramine

Used for allergy symptoms, itching, or sleep aid products.

Catalog search

First-generation antihistamine Allergy and sleep ID 71

diphenhydramine reference image: A weekly medication organizer with capsules. — Image: Pilulier semainier.JPG by Stephane8888, CC BY-SA 2.5.

What It Is Used For

Used for allergy symptoms, itching, or sleep aid products.

Active Ingredient

diphenhydramine

Chemical Name

diphenhydramine hydrochloride

Common Brands

Benadryl, ZzzQuil

Generic / Alternate Names

diphenhydramine tablets, diphenhydramine liquid, diphenhydramine

Tracking Note

Track drowsiness, confusion, dry mouth, dose timing, and reason for use.

Reference Links

RxNorm PubChem DailyMed MedlinePlus PubMed Studies

Clinical links

Linked conditions and symptoms

Allergies reference image: An anatomical illustration of red blood cells. — Image: Blausen 0761 RedBloodCells.png by BruceBlaus, CC BY 3.0.

Allergies

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Blood / immune common use

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Anaphylaxis reference image: An anatomical illustration of red blood cells. — Image: Blausen 0761 RedBloodCells.png by BruceBlaus, CC BY 3.0.

Anaphylaxis

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Blood / immune common use

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Allergic Rhinitis reference image: An anatomical illustration of red blood cells. — Image: Blausen 0761 RedBloodCells.png by BruceBlaus, CC BY 3.0.

Allergic Rhinitis

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Respiratory common use

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Eczema reference image: An anatomical illustration of skin layers. — Image: Blausen 0810 SkinAnatomy 01.png by BruceBlaus, CC BY 3.0.

Eczema

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Skin / dermatology common use

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Hives reference image: An anatomical illustration of skin layers. — Image: Blausen 0810 SkinAnatomy 01.png by BruceBlaus, CC BY 3.0.

Hives

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Skin / dermatology common use

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Tongue swelling reference image: An anatomical illustration of the human heart. — Image: Blausen 0451 Heart Anterior.png by Blausen Medical Communications, Inc., CC BY 3.0.

Tongue swelling

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Eye / ear / nose / throat symptom context

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Watery eyes reference image: A person jogging outdoors. — Image: Jogging Woman in Grass.jpg by Mike Baird, CC BY 2.0.

Watery eyes

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Eye / ear / nose / throat symptom context

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Swelling reference image: An anatomical illustration of the human heart. — Image: Blausen 0451 Heart Anterior.png by Blausen Medical Communications, Inc., CC BY 3.0.

Swelling

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

General / systemic symptom context

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Severe allergic reaction reference image: A weekly medication organizer with capsules. — Image: Pilulier semainier.JPG by Stephane8888, CC BY-SA 2.5.

Severe allergic reaction

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Medication / allergy symptom context

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Nasal congestion reference image: An anatomical illustration of the respiratory system. — Image: Blausen 0770 RespiratorySystem 02.png by BruceBlaus, CC BY 3.0.

Nasal congestion

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Respiratory symptom context

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Runny nose reference image: An anatomical illustration of the respiratory system. — Image: Blausen 0770 RespiratorySystem 02.png by BruceBlaus, CC BY 3.0.

Runny nose

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Respiratory symptom context

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Sneezing reference image: An anatomical illustration of the respiratory system. — Image: Blausen 0770 RespiratorySystem 02.png by BruceBlaus, CC BY 3.0.

Sneezing

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Respiratory symptom context

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Hives reference image: An anatomical illustration of skin layers. — Image: Blausen 0810 SkinAnatomy 01.png by BruceBlaus, CC BY 3.0.

Hives

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Skin / hair / nails symptom context

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Itching reference image: An anatomical illustration of skin layers. — Image: Blausen 0810 SkinAnatomy 01.png by BruceBlaus, CC BY 3.0.

Itching

Commonly used for allergy symptoms or emergency allergic-reaction care depending on medicine and route.

Skin / hair / nails symptom context

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